How to update or change your Microsoft 365 account’s time zone

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To change the time zone for your Microsoft 365 account, start by accessing your email via mail.chi.ac.uk (the Microsoft 365 portal).
  1. Open your email and click the Settings cog. This is located at the top-right of the screen on the menu bar.
  2. Select View all Outlook settings at the bottom of the settings pane.

  3. In the left-hand menu, choose General, then select Language and time.

  4. At the bottom of this menu, choose your correct Time zone.

This image shows the office 365 menu settings cog.
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Updated on January 16, 2026